He is, unless you “cheat” and use Sableye teehee. But nah playing through Emerald I never realised how freaking tough most of the leaders where. Even Juan kicked some butt :S
I should of used Sabeye but I got stubborn and went with a mix of my Grovyle,my Ralts and a spare Tailow. it was just his Makuhita that wrecks everything.
With Juan, I had no troubles with him. Maybe his Kingdra (He has one right? its been a while)
I do believe I had a Combusken, Ralts, Lotad (Not sure when that evolves-) and a Poochyena before I gave up and caught Sableye, his whole team slaughtered me.
Ya it’s that Kingdra that’s a right butt. Never thought it was as good a pokemon as it was- only because first time playing it it felt the mighty wrath of my Blaziken.